Abstract: A pin arrangement control apparatus, as well as a system therefor, capable of pin arrangement in any arbitrary pin arrangement patterns are implemented only by slightly modifying a pin setter machine equipped with only basic functions for performing the so-called tenpin bowling. A common pin setter machine equipped with means for setting the first-bowl ten pins, and means for gripping and elevating the set pins, sweeping with the rake and then rearranging the pins is additionally equipped with a selective pin gripping mechanism for gripping only pins corresponding to a pin arrangement pattern given from external. Thus, the pin setter machine is capable of pin arrangement in a specified pin arrangement pattern for rearrangement of the second-bowl pins.

Abstract: An automatic bowling pin setting machine includes a sorting section receiving knocked down pins and bowling balls, an elevator conveying pins to a receiving reel, and a setting reel to which pins drop downwardly from the setting reel. Gripper arms accompanying the setting reel pick up any standing pins to ready the alley for a second throw. After a second throw, the alley is swept clean of pins, and the setting reel places a new set of pins in the alley. The setting machine is designed with reduced maintenance in mind and for sureness of operation.

Abstract: An automatic bowling pin setting machine includes a sorting section receiving knocked down pins and bowling balls, an elevator conveying pins to a receiving reel, and a setting reel to which pins drop downwardly from the setting reel. Gripper arms accompanying the setting reel pick up any standing pins to ready the alley for a second throw. After a second throw, the alley is swept clean of pins, and the setting reel places a new set of pins in the alley. The setting machine is designed with reduced maintenance in mind and for sureness of operation.

Abstract: This invention relates to a modification of existing bowling alley pin setting equipment to facilitate bowling practice. The fixed pivot point of the scissor arms, supported by the scissors deck, is movable from a first position, in which the original pivot point of the scissors arms is maintained, to a second position, in which the pivot point is movable to prevent adequate closing of the scissor arms whereby an undesired pin(s) is not clamped by the scissor arms and remains on the bowling surface where it may be swept away by the sweeper during its sweeping motion. All of the necessary pin(s), required for a desired bowling practice pin combination, a clamped and raised by the scissor arms during the resetting cycle. The invention also relates to a control mechanism for controlling movement of the slidable pivot point.